Peer Review History
| Original SubmissionApril 3, 2024 |
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PONE-D-24-10207Performance of indirect adherence measures for daily oral pre-exposure prophylaxis for HIV among adolescent men who have sex with men and transgender women in Brazil.PLOS ONE Dear Dr. Zeballos, Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’s publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process. Please submit your revised manuscript by Aug 16 2024 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at plosone@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pone/ and select the 'Submissions Needing Revision' folder to locate your manuscript file. Please include the following items when submitting your revised manuscript:
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Kind regards, Fengyi Jin, Ph.D. Academic Editor PLOS ONE Journal Requirements: When submitting your revision, we need you to address these additional requirements. 1. Please ensure that your manuscript meets PLOS ONE's style requirements, including those for file naming. The PLOS ONE style templates can be found at https://journals.plos.org/plosone/s/file?id=wjVg/PLOSOne_formatting_sample_main_body.pdf and 2. Thank you for stating the following financial disclosure: "This project was made possible by funding and support from UNITAID (#2017-15-FIOTECPrEP)" Please state what role the funders took in the study. If the funders had no role, please state: ""The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript."" If this statement is not correct you must amend it as needed. Please include this amended Role of Funder statement in your cover letter; we will change the online submission form on your behalf. 3. When completing the data availability statement of the submission form, you indicated that you will make your data available on acceptance. We strongly recommend all authors decide on a data sharing plan before acceptance, as the process can be lengthy and hold up publication timelines. Please note that, though access restrictions are acceptable now, your entire data will need to be made freely accessible if your manuscript is accepted for publication. This policy applies to all data except where public deposition would breach compliance with the protocol approved by your research ethics board. If you are unable to adhere to our open data policy, please kindly revise your statement to explain your reasoning and we will seek the editor's input on an exemption. Please be assured that, once you have provided your new statement, the assessment of your exemption will not hold up the peer review process. 4. One of the noted authors is a group or consortium "The PrEP1519 study group". In addition to naming the author group, please list the individual authors and affiliations within this group in the acknowledgments section of your manuscript. Please also indicate clearly a lead author for this group along with a contact email address. [Note: HTML markup is below. Please do not edit.] Reviewers' comments: Reviewer's Responses to Questions Comments to the Author 1. Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented. Reviewer #1: Partly Reviewer #2: Yes Reviewer #3: Partly ********** 2. Has the statistical analysis been performed appropriately and rigorously? Reviewer #1: Yes Reviewer #2: I Don't Know Reviewer #3: No ********** 3. Have the authors made all data underlying the findings in their manuscript fully available? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified. Reviewer #1: Yes Reviewer #2: No Reviewer #3: Yes ********** 4. Is the manuscript presented in an intelligible fashion and written in standard English? PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here. Reviewer #1: No Reviewer #2: Yes Reviewer #3: Yes ********** 5. Review Comments to the Author Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters) Reviewer #1: The authors aim to evaluate the performance of MPR, pill count, and self-report, compared to referent DBS, among adolescent men have sex with men and adolescent transgender women in Brazil. The study makes important contributions by examining how alternative metrics to assess PrEP adherence could be used in resource limited settings. Ultimately, though, much more detail about the study design and analytic strategy is needed to better interpret the results and contextualize these findings. Major suggested revisions: 1. Authors report prior literature in the introduction that “Studies that compared indirect measures with DBS have found that MPR, pill count, and self-report can discriminate participants with and without sufficient drug levels for protection against HIV infection [12, 14, 15]” which is the goal of this study – more information is needed on the gap in knowledge to assess what this study is adding to the literature and why it is important. 2. MPR seems like a valuable tool for PrEP persistence rather than PrEP adherence – I’m unsure how someone’s maximal PrEP adherence (the function of MPR) is related to pill taking and ultimately adherence. The use of this metric needs more justification in the context of pill taking and adherence in this study. 3. The sampling mechanism for DBS is quite confusing and is presented in a way that I (personally) cannot follow. Did all participants have DBS measured all time points? What is the justification for 30 samples for each visit number? Could participants who had a sample taken at the first visit not have a sample taken at the second visit, and then a sample at the third visit? These questions would further impact how you model these data for your longitudinal analyses and impact your interpretation of results. Further, I would present the power analysis before discussing the sampling that took place. 4. There is no mention of controlling for confounding factors in this analysis. Were these accounted for? There is differential sociodemographic characteristics in both groups (aMSM aTGW) which would impact self-report measures. Further, the variability in the informed consent process would significantly introduce selection bias as participants in some regions did not have to have parental consent and should be accounted for. Were these metrics controlled for? 5. Table 1 could be modified to remove values for persons not included in the study and moved to a supplemental text. Why were these specific participants not included? A breakdown either by figure or table for numbers of persons excluded by inclusion/exclusion criteria would be helpful to understand why individuals were not selected to participate in the study. Further, does the “not included” participants column(s) include participants that were not in the PrEP arm? Further, I do not think this table needs to be stratified by gender identity as you do not provide estimates stratified by gender identity further in the text. 6. It seems as those these metrics are great for identifying individuals who are adherent to PrEP but not so much those who are non-adherent. If this is a way to identify persons who are non-adherent, there needs to be more integration of existing literature on poor-adherence metrics or better ways to capture this specific population. Minor suggested revisions 7. It is unclear what authors mean by “first dose” [line 29]. Is this literally the first pill, or their first prescription? Are these first time PrEP users? 8. Participants self-selected into arms which may introduce a selection bias as participants who chose to participate in the study and chose to take PrEP may be more inclined to use daily PrEP properly and should be noted as a limitation in the discussion. 9. It is unclear if inclusion/exclusion criteria [line 77-82] are for the larger study data or are specific to these set of analyses. If they are for all participants of the larger study (not just PrEP users) I would consider moving them above the citation for the parent study. 10. Follow up visits were scheduled at baseline, 30 days, 60 days, and quarterly thereafter [line 84-85] but there is no mention of how many visits occurred past the 60 day mark. Please define quarterly in number of days as the prior to visits were also described as such and include a specific number of visits for the study duration. 11. It is stated that MPR values range from 0-1; however, it is also stated that values equal or more than 1 indicate that values could range beyond 1? Please clarify either the range of MPR values, or the set of values that indicate full coverage. 12. Pill count seems like a false representation of the actual metric being assessed – this is a proportion of pills used per all pills received during a given time period, not a simple count. An alternative title for this metric may help the reader to better understand the true use of this metric. 13. It may be beneficial to add another level of subheadings for each of your metrics for assessing PrEP use. 14. In your sample size calculation it would be beneficial to get the exact numbers of those who seroconverted, number of TGW, and how many MSM were sampled at this stage as a direct comparison for the calculated power (in this section). The proportion of samples in each of these three groups could impart bias even if a random sample of aMSM was conducted. 15. There is no information on model type that was used to estimate ROC. GEE is an estimation method used in tandem with a specific model (linear, logistic). Was logistic regression used to build the ROC curves with GEE for longitudinal data analyses? Further, please specify which correlation structure was used with GEE (which should align with sampling methods and a priori hypothesis) as this can impact precision. 16. I would add a citation for the Youdon index and a brief explanation of the purpose. 17. Throughout, sensitivity is sometimes referred to as sensibility and sometimes referred to as sensitivity. Please adjust all mentions of sensibility to sensitivity. 18. You can not have over 100% for the pill count and self report as it is currently described. The “≥” [Line 150] should be changed to >. 19. Please clarify what NA stands for in Table 1. Are these missing? 20. Please provide 95% confidence intervals for all estimates of AUC throughout the text considering the sample size is relatively small. 21. I would suggest supplemental tables that include values for the GEE analyses for Tables 4 and 5 to assess differences in the analytical methods. It seems as though overall in longitudinal analyses there are larger AUCs which may be reflective of behavior over time and if persons are being seen by the same provider, these metrics can be assessed. 22. There exist instances in the text where aTGW and aMSM are used and others where ATGW and AMSM are used. Please use one acronym as to not confuse readers. 23. Please Reviewer #2: This is a useful study and adds to the body of knowledge about what is known about PrEP effectiveness and measuring adherence. I suggest the following minor revisions: 1. The abstract should contain the results in digestible format that is easily understood; this can be done by reporting in percentages and stating clearly in the conclusion which indirect measures are most useful/recommended based on the results from the AUCs. 2. Authors might need to check the acronyms and select between between referring to adolescent MSM and TGW as aMSM or AMSM (aTGW or ATWG) to avoid confusion. 3. I suggest that the conclusion be strengthened along the lines suggested in point 1. This can be done by clearly identifying which indirect measures are most useful/easy to implement and add as recommendations. Great job! Reviewer #3: This study utilized tenofovir-diphosphate (TFV-DP) concentrations as the reference standard and evaluated three index tests: medication possession ratio (MPR), pill count, and self-report. The area under the curve (AUC) was calculated for protective TFV-DP levels (≥800 fmol/punch), while sensitivity (SE) and specificity (SP) were employed for established cutoff points. Areas for potential improvement in this study include: The term "unprotected sex" in line 78 is not specific; it is suggested to modify it to specialized terms like "condomless anal intercourse." Self-report was assessed based on a question about missing doses during the last month, but the follow-up intervals were not consistently 30 days. It is recommended to add relevant explanations in the discussion of limitations. MPR ranges from zero to 1, with values equal to or greater than 1 indicating full coverage during the period (≥100%). The range of MPR was stated as 0-1 initially, so it is contradictory to describe values exceeding 1 later. Consistency is needed in descriptions such as AMSM and aMSM, ATGW and aTGW. The decimal places in Table 4 are inconsistent and should be revised for uniformity. The calculation method for the P-values in Table 1 was not explained. It is inferred from the statistical methods section that the chi-square test was used, but due to low frequencies in variables like “schooling” and “partner living with HIV”, the Fisher's exact test would be more appropriate. Additionally, upon reevaluation, discrepancies were found in the P-values for “schooling” and “partner living with HIV” in the TGW subgroup compared to the authors' results. It is recommended to merge the three curves in Fig 1 into one coordinate system, differentiate them with different colors, and clearly label the AUC values for each method. It is suggested to include an introduction in the background section regarding the adherence levels of global adolescents using PrEP. ********** 6. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy. Reviewer #1: No Reviewer #2: Yes: Dr. Helen Anyasi Reviewer #3: No ********** [NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". 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| Revision 1 |
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Performance of indirect adherence measures for daily oral pre-exposure prophylaxis for HIV among adolescent men who have sex with men and transgender women in Brazil. PONE-D-24-10207R1 Dear Dr. Zeballos, We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements. Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication. An invoice will be generated when your article is formally accepted. Please note, if your institution has a publishing partnership with PLOS and your article meets the relevant criteria, all or part of your publication costs will be covered. 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If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation. Reviewer #1: All comments have been addressed Reviewer #3: All comments have been addressed ********** 2. Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented. Reviewer #1: Yes Reviewer #3: Yes ********** 3. Has the statistical analysis been performed appropriately and rigorously? Reviewer #1: Yes Reviewer #3: Yes ********** 4. Have the authors made all data underlying the findings in their manuscript fully available? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified. Reviewer #1: Yes Reviewer #3: Yes ********** 5. Is the manuscript presented in an intelligible fashion and written in standard English? PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here. Reviewer #1: Yes Reviewer #3: Yes ********** 6. Review Comments to the Author Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters) Reviewer #1: Thank you for the opportunity to review the revised manuscript. The authors did a great job addressing my feedback and I have no further comments. Reviewer #3: The revised version looks good, and authors have responed all comments very well. I have no additional comments. ********** 7. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy. Reviewer #1: No Reviewer #3: No ********** |
| Formally Accepted |
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PONE-D-24-10207R1 PLOS ONE Dear Dr. Zeballos, I'm pleased to inform you that your manuscript has been deemed suitable for publication in PLOS ONE. Congratulations! Your manuscript is now being handed over to our production team. At this stage, our production department will prepare your paper for publication. This includes ensuring the following: * All references, tables, and figures are properly cited * All relevant supporting information is included in the manuscript submission, * There are no issues that prevent the paper from being properly typeset If revisions are needed, the production department will contact you directly to resolve them. If no revisions are needed, you will receive an email when the publication date has been set. At this time, we do not offer pre-publication proofs to authors during production of the accepted work. Please keep in mind that we are working through a large volume of accepted articles, so please give us a few weeks to review your paper and let you know the next and final steps. Lastly, if your institution or institutions have a press office, please let them know about your upcoming paper now to help maximize its impact. If they'll be preparing press materials, please inform our press team within the next 48 hours. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org. If we can help with anything else, please email us at customercare@plos.org. Thank you for submitting your work to PLOS ONE and supporting open access. Kind regards, PLOS ONE Editorial Office Staff on behalf of Dr. Fengyi Jin Academic Editor PLOS ONE |
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